<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    .container {
      display: grid;
      grid-template-columns: 100px auto 200px;
      grid-template-rows: 100px 400px 100px;
    }
    header,footer {
      /* grid-column-start: 1; */
      /* grid-column-end: 4; */
      background-color: aqua;
      grid-column: 1/4;
    }
    aside {
      background-color: red;
    }
    article {
      background-color: blue;
    }
  </style>
</head>
<body>
  <div class="container">
    <header>头部</header>
    <aside>左侧</aside>
    <article>中间</article>
    <aside>右侧</aside>
    <footer>底部</footer>
  </div>
</body>
</html>